Muslim teen cuffed over clock: Obama and I "talked about Mars"

President Obama hosted Astronomy Night at the White House Monday night to celebrate space, featuring budding scientists, teachers and astronauts.

One special guest was the young scientist whose controversial clock invention gained international attention, reports CBS News correspondent Major Garrett.

Ahmed Mohamed saw stars on the South Lawn of the White House. He was one, too, posing for pictures as the embodiment of youthful scientific curiosity, controversy and misunderstanding in an age of terror.

Mohamed met scientific stars like astronaut Alvin Drew before taking his seat to hear President Obama, who spoke of the importance of cultivating and encouraging those "glimmers of curiosity and possibility, not suppress them, not squelch them."

Afterward, the president and Mohamed chatted briefly, in an encounter that capped an amazing odyssey. Mohamed called it a short but "very long journey in the experience of learning."

"I learned that people would always be there to support you when there's injustice," Mohamed said. "There's a ton that I learned...I'm trying to get a message of how you shouldn't judge a person by what they look like. You should always judge a person by their heart."

Just over a month ago, Mohamed brought a crude digital clock he constructed at home to school. His English teacher thought the contraption might be a bomb. Mohamed said as soon as he saw "her eyebrows go up," he knew was in trouble. He was arrested and suspended from school.

Mohamed's innocent motive behind his clock was to impress his engineering teacher, "but instead, I impressed the world," he said.

Tech executives rallied to Mohamed's cause and President Obama took to Twitter to praise his innovative spirit - one Mohamed said might make a difference in space.

"We talked about Mars and 2030 and I talked to him about the generator that I'm making and how it could help people on Mars," Mohamed said of his conversation with the president.